fix(EVM): Change caching of fixed context values

[vladimirradosavljevic]

What ❔

Instead of caching these values in memory, cache them in local variables that are defined before the main loop.

Why ❔

By doing this, one load will be removed and store will be changed to add that spills variable onto the stack:

before:
	ldm.h	768, r1
	sub!	r1, r0, r0
...
	stm.h	768, r1

after:
	sub!	stack-[12], r0, r0
...
	add	r1, r0, stack-[12]              ; 32-byte Folded Spill

Checklist

• PR title corresponds to the body of PR (we generate changelog entries from PRs).
• Tests for the changes have been added / updated.
• Documentation comments have been added / updated.

[vladimirradosavljevic]

Numbers after this change:

╠═╡ Ergs/gas (-%) ╞═╡ EVMInterpreter M3B3 ╞═╣
║ ORIGIN                              3.033 ║
║ CODESIZE                            7.671 ║
║ GASPRICE                            3.040 ║
║ COINBASE                            3.035 ║
║ TIMESTAMP                           3.040 ║
║ NUMBER                              3.040 ║
║ PREVRANDAO                          3.040 ║
║ GASLIMIT                            3.035 ║
║ CHAINID                             3.045 ║
║ BASEFEE                             3.040 ║
║ CALL                               -0.153 ║
║ STATICCALL                         -0.153 ║
║ DELEGATECALL                       -0.164 ║
║ CREATE                             -0.029 ║
║ CREATE2                            -0.031 ║
╚═══════════════════════════════════════════╝

@0xVolosnikov PTAL.